用豆油增塑剂取代橡胶中的石油基油

正增塑剂在橡胶胶料中起着重要作用。可用来改善未硫化胶料的加工性能、自粘性、分散和流动性能。增塑剂可降低硫化胶的模量或改善其低温性能,或使用便宜的油或填料填充聚合物来降低橡胶胶料的成本,主增塑剂可溶解橡胶,促进聚合物链的布朗运动,从而降低胶料的粘度。助增塑剂不能溶解弹性体,但它们可在聚合物链间起润滑剂的作用以改善流动性。选择增塑剂时,很重     

用于弹性体的生物油的最新研究进展

正1石油橡胶增塑剂概述橡胶增塑剂(通常称为操作油)用于橡胶胶料的时间已经长达一个世纪之久。用增塑剂可以降低胶料的粘度和弹性、降低玻璃化转变温度、改善填料的分散,还可以降低总体生产成本。加入增塑剂会影响橡胶胶料的浸润性和润滑性,这些性能直接关系到橡胶的加工性能。加入增塑剂还会影响混炼和助剂在胶料中的分散,会对胶料的后续加工产生影响,例如挤出、压延、出片和模压。     

新型环保橡胶助剂对氢化丁腈橡胶性能的影响及其在汽车同步带胶料中的应用

研究新型环保橡胶助剂增塑剂D810、分散剂WBP-100、助交联剂Ricobond 1756和改性酚醛树脂对氢化丁腈橡胶(HNBR)性能的影响及其在HNBR汽车同步带胶料中的应用。结果表明:增塑剂D810可有效代替传统增塑剂TOTM和TP-95用于HNBR中;分散剂WBP-100可改善HNBR的拉伸性能,提高硫化效率,在一定程度上延长HNBR汽车同步带的使用寿命;助交联剂Ricobond1756用量为2.5份可改善HNBR胶料的拉伸性能,使HNBR汽车同步带动态疲劳寿命延长约13%;新型改性酚醛树脂可有效提高HNBR胶料与尼龙帆布和玻璃纤维线绳的粘合性能。     

环保橡胶增塑剂HJA0810在工业橡胶板胶料中的应用

研究高芳烃含量的环烷基环保橡胶增塑剂HJA0810(以下简称增塑剂HJA0810)在工业橡胶板胶料中的应用,并与现用机油进行对比。结果表明:与添加机油的胶料相比,添加增塑剂HJA0810的胶料混炼工艺性能和硫化特性相当,硫化胶的物理性能和耐热老化性能提高;随着增塑剂HJA0810用量增大,硫化胶的物理性能和耐热老化性能提高,耐压缩疲劳性能先提高后降低;增塑剂HJA0810可等量或适当增量替代机油应用于工业橡胶板胶料中,改善工业橡胶板胶料的环保性能。     

环保型增塑剂HEXAMOLL DINCH对丁腈橡胶性能的影响

研究新型环保型酯类增塑剂环己烷1,2-二甲酸二异壬基酯(DINCH)对丁腈橡胶(NBR)性能的影响。结果表明:在增塑剂用量相同(18份)的情况下,添加增塑剂DINCH的NBR胶料的拉伸强度和拉断伸长率高于添加邻苯二甲酸二丁酯、邻苯二甲酸二辛酯、癸二酸二丁酯和癸二酸二辛酯的胶料,压缩永久变形较小;定伸应力与添加脂肪族二酸酯类的胶料相当;耐溶剂抽出性能良好,耐寒性稍优于添加邻苯二酸酯类增塑剂的胶料。     

天然橡胶胶料的耐低温性能研究

研究天然橡胶（NR）胶料的耐低温性能。结果表明：NR胶料的耐低温性能可以通过橡胶并用、改变填充剂和增塑剂种类、调整硫黄用量等方式进行提高。玻璃化温度低且与NR相容性好的增塑剂可以改善胶料的耐低温性能;选用低结构度炭黑可以明显改善胶料的耐低温性能;加入树脂对胶料的耐低温性能不利;促进剂并用对胶料的耐低温性能基本无影响,但硫黄用量对胶料的耐低温性能影响很大。     

新型环保橡胶助剂对氢化丁腈橡胶性能的影响及其在 汽车同步带中的应用

研究新型环保橡胶助剂增塑剂D810、分散剂WBP-100、助交联剂Ricobond 1756和改性酚醛树脂对氢化丁腈橡胶（HNBR）性能的影响及其在HNBR汽车同步带中的应用。结果表明：增塑剂D810可有效代替传统增塑剂TOTM和TP-95用于HNBR中;分散剂WBP-100可改善HNBR的拉伸性能和耐热老化性能,提高硫化效率,在一定程度上延长HNBR汽车同步带的使用寿命;助交联剂Ricobond1756用量为2.5份可改善HNBR胶料的拉伸性能,汽车同步带动态疲劳寿命延长约13%;新型改性酚醛树脂可有效提高HNBR胶料与尼龙帆布和玻璃纤维线绳的粘合性能。     

投产鉴定

新颖橡胶增塑剂 在宜兴问世 由宜兴市中信节能环保公司和国内著名科研单位合作开发生产的新颖橡胶增塑剂最近正式问世,它为我国橡胶加工行业与国际先进水平迅速接轨开拓了新的前景。 新颖橡胶增塑剂为饱和与不饱和脂肪酸锌皂混合物,具有优良的内润滑作用,是橡胶塑炼、混炼操作不可缺少的助剂。 本产品加入胶料中可加速填料在胶料中的分散,改善胶料的均匀性、流动性,从而改善胶料的物理机械性能。其中的不饱和脂肪酸锌皂所含的双键可使生胶塑炼中橡胶分子链断裂所生成的自由基得到稳定,从而提高生胶塑炼效果及可塑度的稳定性,而不影响…     

二烯类热塑性聚氨酯在橡胶胶料中的应用

研究了二烯类热塑性聚氨酯在橡胶胶料中的应用性能。Poly bd 2035 TPU树脂可用作中间粘合层来粘合聚氨酯和其他橡胶材料;也可作为添加剂加入到胶料中,能在提高粘合性能的同时,改善生胶的加工性能、提高生胶强度、降低滞后性能,以及改善耐疲劳龟裂性能。     

增塑剂在氯磺化聚乙烯橡胶中的应用

研究增塑剂DOP、DOS和氯化石蜡对氯磺化聚乙烯橡胶(CSM)性能的影响。结果表明:加入不同品种增塑剂或随着增塑剂用量的增大,CSM胶料的门尼粘度下降,t10和t90延长,交联程度降低,硫化胶的拉断伸长率增大,其他物理性能和耐热空气老化性能均下降,氧指数呈减小趋势,耐低温性能提高;增塑剂DOS对CSM硫化胶耐低温性能的改善效果最大,增塑剂DOP次之,氯化石蜡最小;增塑剂DOS用量为40份的CSM硫化胶达到了耐严寒的要求。     

Derivatives of jojoba oil as plasticizers for vinyl polymers and Buna-N rubber

Summary Ten maleinated jojoba oil derivatives were screened as plasticizers in a standard polyvinyl resin formulation and as softeners for Buna-N rubber. Three of these, the methyl and butyl esters and hydrogenated methyl esters of maleinated jojoba acids, were comparable to the reference standard, DOP, as primary plasticizers for the vinyl resin. Three others were satisfactory only as secondary plasticizers. Six of the derivatives were comparable to the reference softener, dibutyl sebacate, as softeners in a Buna-N formulation and yielded rubbers meeting the low temperature flexibility requirements (−40°C.) of the automotive industry. Two of the six, those made with the butyl and hydrogenated butyl esters of maleinated jojoba acids, met the still more stringent low-temperature requirements of the aircraft industry (−55°C.). In general, hydrogenation of a derivative adversely affected its compatibility in either the vinyl copolymer or the Buna-N formulations. Presented at the 51st annual meeting, American Oil Chemists’ Society, Dallas, Tex., April 4–6, 1960. One of the laboratories of the Southern Utilization Research and Development Division, Agricultural Research Service, U. S. Department of Agriculture.     

Application of new oligomeric plasticizers based on waste poly(ethylene terephthalate) for poly(vinyl chloride) compositions

In this study, chemical recycling products of waste poly(ethylene terephthalate) with oligoesters were used as new plasticizers for poly(vinyl chloride) (PVC). The preparation conditions of the dry blend mixtures of the suspension PVC containing synthesised plasticizers were similar to the conditions of the preparing mixtures with commercial plasticizers. The plasticization efficiency of PVC plasticizers was then examined by analysis of the mechanical, physical and chemical properties, as well as the thermal resistance and migration of plasticizer molecules from polymer matrix. Test results proved that compositions with synthesised oligomeric plasticizers possessed similar or better properties than those containing commercial oligomeric plasticizers and much better properties than those having monomeric plasticizers. Thermal stabilities of the proposed plasticizers were higher than those of the commercial plasticizers either monomeric (bis(2-ethylhexyl)phthalate) or oligomeric, despite the fact that the synthesised oligoesters did not contain any antioxidant. The best properties, especially low volatility, very good mechanical properties, low migration were resulted of the transesterification of the waste PET with oligoesters based on adipic acid, triethylene glycol and 2-ethylhexanol which were selected as plasticizers synthesised on the technical scale. The tested plasticized PVC compositions possessed very good tear resistance, tensile strength, decrease of weight loss after 168 h at 80 °C and low migration. Processing properties of PVC compositions containing these synthesised plasticizers confirmed their effectiveness in these compositions for extrusion process.     

安全玻璃夹层用PVB膜片生产工艺配方的设计

采用胶片级聚乙烯醇缩丁醛(PVB)树脂为基础树脂，选用了不同的增塑剂和助剂，制成了夹层玻璃所用的膜片，分析了工艺流程中各原材料对产品质量的影响。实验表明，PVB树脂颗粒须粒径均匀，不同用途的夹层玻璃需选用不同的增塑剂，同时进行相应生产工艺的调整，才能实现稳定连续的生产。     

浅谈环保型增塑剂生产过程中污染最小化的处理措施

研究了具体的单个增塑剂生产过程中各个生产环节“三废”的产生情况，以及怎样最大限度地减少污染物生成的方法。复配型环保增塑剂是几种不同优良增塑剂的叠加，可以赋予塑料制品多方面的特性，对此类增塑剂的生产特点以及怎样控制污染物做了分析和介绍。     

Phase separation and thermal aging behavior of styrene‐butadiene rubber vulcanizates using liquid polymers as plasticizers studied by differential scanning calorimetry and dynamic mechanical spectroscopy

Styrene–butadiene rubber (SBR) vulcanizates were prepared using plasticizers including the four liquid types of styrene–butadiene copolymers (LPSB), polybutadiene (LPB), polyisoprene (LPI), and the hydrogenated polyisoprene (LHPI) as well as the conventional process oil, and their phase‐separated structures and mechanical properties were investigated by differential scanning calorimetry and dynamic mechanical spectroscopy. The phase separation was observed for the SBR vulcanizates when LPI and LHPI were used as the plasticizers, while the LPSB and LPB gave homogeneous structures because of the good miscibility with the SBR. The phase‐separated structure of the SBR vulcanizate prepared using LPI changed to the homogeneous during the thermal aging. We revealed the role of the liquid polymers as the plasticizers in maintaining the physical and mechanical properties of the SBR vulcanizates during the thermal aging process when the plasticizers were miscible to the SBR. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

橡胶和金属的粘合进展

增强橡胶与金属材料的粘合是许多科研工作者的技术攻关重点,本文从橡胶、粘合剂、添加剂、工艺等4个方面对近年来橡胶与金属粘接的研究进行了归纳。     

增塑剂改性聚乙烯醇复合材料的非等温结晶动力学研究

通过加入特殊增塑剂改性聚乙烯醇(PVA),实现了聚乙烯醇的熔融加工。采用DSC并运用Jeziorny修正的Avrami方程研究了不同用量增塑剂改性聚乙烯醇的非等温结晶特点。结果表明,增塑剂可以提高聚乙烯醇的结晶速率和结晶完善度,并且使微晶尺寸变小,增塑剂有异相成核作用。     

不同增塑剂制备的丙烯酸酯增塑溶胶的性能研究

采用种子乳液聚合的方法合成核壳型丙烯酸酯微球,将4种增塑剂邻苯二甲酸二异壬酯(DINP)、乙酰柠檬酸三丁酯(ATBC)、二乙酸甘油酯(GD)、磷酸三丁酯(TBP)分别与丙烯酸酯聚合物粉末混合制备环保型丙烯酸酯类聚合物溶胶。采用TG、SEM、万能力学测试仪、DMA等分析仪器表征了溶胶的耐热性、表面形貌、拉伸性能及动态力学性能;结果表明:以DINP为增塑剂制备的丙烯酸酯溶胶,与碳酸钙的相容性较好,拉伸强度达到1.01 MPa,耐热性好,是比较理想的增塑剂。     

The influence of plasticizer on extruded thermoplastic starch

This paper describes the use of an extruder for the plastification process of potato starch with glycerol and water as plasticizers. The influence of both plasticizers is expressed in the water absorption index (WAI) and water solubility index (WSI). The amount of water added prior to extrusion is a tool to protect the starch polymers from degradation and to improve the extruder performance.     

UV-Ozone Surface Treatment of SBS Rubbers Containing Fillers: Influence of the Filler Nature on the Extent of Surface Modification and Adhesion

SBS rubbers containing different loadings of calcium carbonate and/or silica fillers were surface treated with UV-ozone to improve their adhesion to polyurethane adhesive. The surface modifications produced on the treated filled SBS rubbers have been analyzed by contact angle measurements, ATR-IR spectroscopy, XPS and SEM. The adhesion properties have been evaluated by T-peel strength tests on treated filled SBS rubber/polyurethane adhesive/leather joints. The UV-ozone treatment improved the wettability of all rubber surfaces, and chemical (oxidation) and morphological modifications (roughness, ablation, surface melting) were produced. The increase in the time of UV-ozone treatment to 30 min led to surface cleaning (removal of silicon-based moieties) due to ablation and/or melting of rubber layers and also incorporation of more oxidized moieties was produced. Although chemical modifications were produced earlier in an unfilled rubber for short time of treatment with UV-ozone, they were more noticeable in filled rubbers for extended length of treatment, mainly for S6S and S6T rubbers containing silica filler. The oxidation process seemed to be inhibited for S6C and S6T rubbers (containing calcium carbonate filler). On the other hand, the S6S rubber containing silica filler and the lowest filler loading showed the higher extent of modification as a consequence of the UV-ozone treatment. The UV-ozone increased the joint strength in all joints, more noticeably in the rubbers containing silica filler, in agreement with the greater extents of chemical and morphological modifications produced by the treatment in these rubbers. Finally, the nature and content of fillers determined the extent of surface modification and adhesion of SBS rubber treated with UV-ozone.